maxdb_affected_rows
maxdb->affected_rows
(PECL maxdb:1.0-7.6.00.38)
maxdb->affected_rows — Gets the number of affected rows in a previous MaxDB operation
Description
Procedural style:
int maxdb_affected_rows
( resource $link
)
maxdb_affected_rows() returns the number of rows affected by the last
INSERT, UPDATE, or DELETE query associated with the provided link
parameter. If this number cannot be determined, this function will return -1.
Note:
For SELECT statements maxdb_affected_rows() works like
maxdb_num_rows().
The maxdb_affected_rows() function only works with queries which modify
a table. In order to return the number of rows from a SELECT query, use the
maxdb_num_rows() function instead.
Return Values
An integer greater than zero indicates the number of rows affected or retrieved.
Zero indicates that no records where updated for an UPDATE statement, no rows matched
the WHERE clause in the query or that no query has yet been executed.
-1 indicates that the number of rows affected can not be determined.
Examples
Example #1 Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
maxdb_report (MAXDB_REPORT_OFF);
$maxdb->query("DROP TABLE mycustomer");
maxdb_report (MAXDB_REPORT_ERROR);
$maxdb->query("CREATE TABLE mycustomer AS SELECT * from hotel.customer");
printf("Affected rows (INSERT): %d\n", $maxdb->affected_rows);
$maxdb->query("ALTER TABLE mycustomer ADD Status int default 0");
$maxdb->query("UPDATE mycustomer SET Status=1 WHERE cno > 50");
printf("Affected rows (UPDATE): %d\n", $maxdb->affected_rows);
$maxdb->query("DELETE FROM mycustomer WHERE cno < 50");
printf("Affected rows (DELETE): %d\n", $maxdb->affected_rows);
$result = $maxdb->query("SELECT title FROM mycustomer");
printf("Affected rows (SELECT): %d\n", $maxdb->affected_rows);
$result->close();
$maxdb->query("DROP TABLE mycustomer");
$maxdb->close();
?>
Example #2 Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
if (!$link) {
printf("Can't connect to localhost. Error: %s\n", maxdb_connect_error());
exit();
}
maxdb_report (MAXDB_REPORT_OFF);
maxdb_query($link,"DROP TABLE mycustomer");
maxdb_report (MAXDB_REPORT_ERROR);
maxdb_query($link, "CREATE TABLE mycustomer AS SELECT * from hotel.customer");
printf("Affected rows (INSERT): %d\n", maxdb_affected_rows($link));
maxdb_query($link, "ALTER TABLE mycustomer ADD Status int default 0");
maxdb_query($link, "UPDATE mycustomer SET Status=1 WHERE cno > 50");
printf("Affected rows (UPDATE): %d\n", maxdb_affected_rows($link));
maxdb_query($link, "DELETE FROM mycustomer WHERE cno < 50");
printf("Affected rows (DELETE): %d\n", maxdb_affected_rows($link));
$result = maxdb_query($link, "SELECT title FROM mycustomer");
printf("Affected rows (SELECT): %d\n", maxdb_affected_rows($link));
maxdb_free_result($result);
maxdb_query($link, "DROP TABLE mycustomer");
maxdb_close($link);
?>
The above example will output
something similar to:
Affected rows (INSERT): 15
Affected rows (UPDATE): 15
Affected rows (DELETE): 0
Affected rows (SELECT): 15
MaxDB Functions
